Collection: Door & Window Alarms
Explore alarms and contact sensors that indicate when doors or windows open. Check mounting requirements, sensor spacing, power sources, and hub compatibility before purchasing.
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Door Chime, METAK Wireless Door Open Contact Sensor Alarm with 500 FT Range, 58 Chimes and 5 Volume Levels for Business/Store/Home/Office When Entering, 5 Transmitters + 2 Plug-in Receivers
Regular price $99.98 USDRegular priceSale price $99.98 USD -
SimpliSafe Entry Sensor - Window and Door Protection - Compatible with The SimpliSafe Home Security System (New Gen) (Renewed)
Regular price $25.98 USDRegular priceSale price $25.98 USD -
5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm
Regular price $15.98 USDRegular priceSale price $15.98 USD -
Wireless Door Chime, Door Open Contact Sensor Alarm with 500 FT Range, 58 Chimes and 5 Volume Levels for Business/Store/Home/Office When Entering, 2 Transmitter + 2 Plug-in Receiver (Black)
Regular price $77.98 USDRegular priceSale price $77.98 USD -
Sabre 120 dB Wedge Door Stop Security Alarm, Extremely Loud Wireless Siren Audible Up to 1,500 Ft., Non-Skid Pad, Compact Alarm Great for Home, Travel, Apartment or Dorm
Regular price $46.68 USDRegular priceSale price $46.68 USD -
SECRUI Door Chime, Door Open Sensor Chime for Business/Home when Entering, Adjustable Volume, Easy installation, 400ft Range, 52 Chimes, M508+D7
Regular price $45.98 USDRegular priceSale price $45.98 USD -
SABRE 120 dB Wedge Door Stop Security Alarm, Extremely Loud Wireless Alarm Siren Audible Up To 1,500 Ft., Non-Skid Pad, Compact Alarm Great for Home, Travel, Apartment or Dorm
Regular price $23.98 USDRegular priceSale price $23.98 USD -
Door Chime When Door Opens, Door Opened Alarm for Home, 2-Sensor 1-Receiver
Regular price $55.98 USDRegular priceSale price $55.98 USD -
4 in 1 Smart WiFi Door Chime When Door Opens Entry Alarm for Security/Kids
Regular price $75.96 USDRegular priceSale price $75.96 USD -
Door Chime When Door Opens, Satisure Wireless Doorbell Sensor Alarm
Regular price $59.98 USDRegular priceSale price $59.98 USD -
Door Chime When Door Opens, Door Opened Alarm 3-Sensor 1-Receiver, Black
Regular price $75.98 USDRegular priceSale price $75.98 USD -
4 in 1 Smart WiFi Door Chime, Door Opens Entry Alarm Sensor for Safety/Kids
Regular price $79.98 USDRegular priceSale price $79.98 USD -
Qolsys DW Mini-S Wireless Contact Sensor for Windows & Doors - S-Line Encrypted 319.5 MHz - Check Compatibility
Regular price $55.30 USDRegular priceSale price $55.30 USD -
Door Chime When Door Opens, Door Opened Alarm for Home/Business Entering
Regular price $41.98 USDRegular priceSale price $41.98 USD -
Recessed NC Security Alarm Door Window Contact Sensor Magnetic Reed Switch. 3⁄4 Inch Door Contact Position Switches DCS Work with All Access Control and Burglar Alarm Systems White 5 pcs
Regular price $19.38 USDRegular priceSale price $19.38 USD -
Door Chime When Door Opens, Door Opened Alarm 2-Sensor 1-Receiver, Black
Regular price $57.98 USDRegular priceSale price $57.98 USD